Add 21/80 and 9/5
1st number: 21/80, 2nd number: 1 4/5
21/80 + 9/5 is 33/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
21/80 = 21 × 1/80 × 1 = 21/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
9/5 = 9 × 16/5 × 16 = 144/80 - Add the two like fractions:
21/80 + 144/80 = 21 + 144/80 = 165/80 - 165/80 simplified gives 33/16
- So, 21/80 + 9/5 = 33/16
In mixed form: 21/16
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